| Frame numbering |
1950 - 1952. Prefix M. 1953. Prefix
M ? |
| |
|
| Engine |
Annual catalogue says Villiers Mk 6E. Capacity
197cc.
59mm x 72mm.
1953
Parts lists says Villiers Mk 8E. Capacity 197cc. 59mm x 72mm. |
| Gears |
Three speed |
| Frame |
Single downtube with detachable rear
frame. Plunger rear suspension. |
| Forks |
Model 6 lightweight telescopic fork.
Undamped three-rate springs. Plastic
gaiters. |
| Tyres |
19" x 3.00". |
| Wheel rims |
Dunlop WM1 36 hole |
| Ignition timing |
5/32"" before top dead centre. |
| Points gap |
0.012" - 0.015" |
| Plug gap |
0.018" |
| Plug type |
Original spec. Lodge HH 14.
14mm short reach. |
| Carburettor |
Villiers Type 4 / 5 two lever. |
| Jet size |
0.081" |
| Needle |
No. 4½ - variable. |
| Needle setting |
Variable - adjusted from handlebar to
suit running conditions |
| Tank capacity |
2¼ gallons approximately. Use of unleaded
fuel will cause no problems |
| Petroil mixture |
16:1 as originally specified. Can be
safely reduced to 20:1 with modern oils. |
| Gearbox capacity |
Remove oil level screw on side of engine
casing and oil filler screw on top of casing. Fill oil through the
filler opening until oil begins to run out through the level plug hole.
The correct level of oil is then assured. Check it regularly. Castrol
"D" SAE 140 |
| Chaincase capacity |
Not applicable as the primary chain runs
within the gearbox. |
| Chains |
Primary chain: 50 pitches. ½"
x 0.335" x 0.205" (Renold 110044)
Final drive chain: ½" x 0.335" x 0.205" wide.
(Renold 110044) |
| Sprockets |
Engine: (crankshaft) 19 teeth. ½" pitch.
Gearbox (final drive) 15 teeth. ½" pitch
Rear wheel sprocket: 44 teeth as standard. |
| Brakes |
5" front & rear |
| Bulbs: Rectified |
Main bulb: 6v - 24 / 24w
Tail lamp: 6v - 3w M.B.C. Where tail lamp only is fitted.
Stop and tail lamp: 6v - 18 / 3w.
Parking lamp bulb: 6v - 3w
Parking lamp battery Ever Ready No. 1289 |
